Patent application number | Description | Published |
20130081583 | REGULATABLE COOLANT PUMP HAVING INTEGRATED PRESSURE CHAMBER - A regulatable coolant pump of an internal combustion engine having a pump housing in which a pump shaft with an associated impeller is rotatably mounted. The impeller conveys a coolant via an intake connection into a pressure channel of the coolant pump, a volume flow of the coolant pump being adjustable by a guide plate that externally surrounds the impeller at least in some regions and is displaceable by a pressure medium. The guide plate is connected in rotationally fixed fashion to the impeller and is continuously axially displaceable between two end positions and guided with a cylindrical bushing, with play at both sides, in an annular groove of the impeller or of an insert enclosed by the impeller. The guide plate, the pump shaft, the insert part, and/or the impeller together delimit a pressure chamber that is charged by the pressure medium in order to displace the guide plate. | 04-04-2013 |
20130343877 | REGULATABLE COOLANT PUMP - The invention relates to a regulatable coolant pump for a cooling circuit of an internal combustion engine, comprising a hollow bearing shaft ( | 12-26-2013 |
20140037432 | CONTROLLABLE COOLANT PUMP - A coolant pump for a coolant circuit of an internal combustion engine, the coolant pump having a pump housing in which is mounted a drivable shaft, to one end of which is attached an impeller-which has vanes extending into a suction chamber and is connected to a cover plate. Fluid can be drawn into the suction chamber through an intake port of the pump housing by joint rotation of the impeller and the cover plate and can be conveyed by the vanes into the pump housing. A guide plate, which is axially displaceable by an actuation unit, is disposed between the impeller and the cover plate. The guide plate has a contour corresponding to the impeller and a collar oriented toward the impeller. The coolant pump is characterized in that the guide plate has at least one opening. | 02-06-2014 |
20140147304 | COOLANT PUMP FOR A COLLANT CIRCUIT OF AN INTERNAL COMBUSTION ENGINE - A coolant pump for a coolant circuit of an internal combustion engine, including a drive wheel which is connected to an impeller via a drive shaft rotatably mounted in a pump housing has at least one coolant outlet provided radially with respect to the impeller. A blocking ring is movable in an axial direction and serves to change or block a cross-sectional area of the coolant outlet and is displaced by a pressure-medium-operated actuator. The actuator is arranged concentrically with the drive shaft in the region of the end thereof facing the impeller is secured on the end of the drive shaft, and is connected to a pressure medium supply via at least one longitudinal bore provided in the drive shaft. | 05-29-2014 |
20140241862 | CONTROLLABLE COOLANT PUMP - A controllable coolant pump for a coolant circuit of an internal combustion engine. The coolant pump has a hollow bearing shaft which is supported in a bearing sleeve, carries a drive wheel at one end, and is permanently connected to an impeller at its opposite end, the impeller having a stop surface at the end face thereof. The space between the stop surface and the impeller forms the pumping cross section for a coolant. A piston that can be axially displaced by an actuation unit is disposed in the hollow bearing shaft and provided at its outer end with a guide plate having a collar facing the impeller for completely or partially closing the pumping cross section in accordance with the position of the piston. The coolant pump has a second actuation unit, and the piston can be displaced by the first or second actuation unit. | 08-28-2014 |
20140241864 | CONTROLLABLE COOLANT PUMP - A controllable coolant pump for a coolant circuit of an internal combustion engine, the coolant pump including a hollow bearing shaft which is supported in a bearing sleeve, carries a drive wheel at one end, and is permanently connected at its opposite end to an impeller, the impeller having a stop surface at the end face thereof; the space between the stop surface and the impeller forming the pumping cross section for a coolant, and a piston that can be axially displaced by an actuation unit being disposed in the hollow bearing shaft and provided at its outer end with a guide plate having a collar facing the impeller for completely or partially closing the pumping cross section in accordance with the position of the piston. The actuation unit has a release lever which can be pivoted by an electromechanical actuating element about an axis of rotation, thus allowing axial positioning of the piston. | 08-28-2014 |
20140243139 | ASSEMBLY HAVING A BELT-PULLEY DRIVE - Assembly having a belt-pulley drive, having a pulley wheel which can be driven by a belt and is configured for transmitting a torque to a drive shaft of the assembly. The assembly has a switchable gear mechanism which makes a transmission ratio possible between the rotational speed of the pulley wheel and the rotational speed of the drive shaft. | 08-28-2014 |
20140271267 | CONTROLLABLE COOLANT PUMP HAVING A FLUIDIC ACTUATOR - A controllable coolant pump for a cooling circuit of an internal combustion engine having a pump housing with an inner bore, a shaft drivable via a pulley mounted rotatably via a first bearing and a second bearing, wherein the shaft is configured at least partially as a hollow shaft and has a longitudinal axis, wherein a rotor is fastened to one end of the shaft, which rotor has an idler pulley and vanes which project into a suction chamber to suck water via a suction connector of the pump housing into the suction chamber to an annular channel of the pump housing, wherein the idler pulley can be displaced axially via a push rod connected to an actuator. The fluidic actuator has a first pressure chamber and a second pressure chamber. The weight and the installation space requirement of the controllable coolant pump can be reduced. | 09-18-2014 |
20140299439 | ACTUATOR DEVICE FOR ACTUATING A COUPLING MECHANISM - An actuator device for actuating a coupling mechanism or a transmission in a drive wheel in a belt drive or chain drive, includes a shaft, releasably connectable to the drive wheel and at least partially hollow, a push rod connected to the coupling mechanism or transmission and displaceable coaxially to the longitudinal axis of the shaft, a housing having an internal bore for at least partially receiving the shaft, and at least one first bearing disposed in the internal bore of the housing for rotatably supporting the shaft. The actuator device constitutes a fluidic actuator having at least one first pressure chamber capable of being pressurized with a fluid. | 10-09-2014 |